Weighing-scale.



G. HUTCHINSON.

WBIGHING SCALE.

APPLIUATION FILED AUG. 25, 1911.

Patented June 2, 1914. r

2 SHEETSSHBET 1.

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/1 ttornqv s G. HUTGHINSON.

WEIGHING SCALE.

APPLICATION FILED AUG. 25, 1911.

. 1,099,O51 I I Patented June 2,1914.

2 SHEBTSSHEET 2.

.8607 e [info/1a won and more particularly to scales of the pendu-.

UNITED STATES PATENT 'OFFICE.1

I GEORGE nurcnmson, or CHRISTCHURCH, nnw ZEALAND.

WEIGHIITG-SCALE.

Specification of Letters Patent.

Patented J line 2, 1914.

Application filed August 25, 1911. Serial No. 645,972.

To all whom "it may concern:

Be it known that I, GEORGE a subject of the King of Great Britain andIreland, and residing at Hereford street, Christchurch, in theProvincial District of Canterbury, in the Dominion of New Zealand, haveinvented certain new and useful Improvements in or Relating to Weighing-Scales, of which the following is a specification.

This invention relates to weighing scales lum and spring types, and hasfor its object to devise means whereby it is made possible to produce apendulum scale in which the dial is at right angles to the beam orsteelyard actuating the pointer thus effecting considerable economy inthe space occupied by the scale and causing the dial to face thesalesman squarely while 'he operates the goods upon the pan whereas inconstructions hitherto known the steelyard has actuated a pendulum whichhas always been set to swing in a plane tandem to that of the steelyardand as a necessary consequence the dial also has been placed tandem tothe steelyard. v

In the accompanying drawings, Figure 1 is a perspectivefview showing oneconven-' ient construction of scale according to my invention. Fig. 2 isa rearelevation; Fig. 3 is a sectional elevation showing the dial andpointer. -Fig. 4 is a modified form of pendulum.

In carrying my invention into effect in one 1 convenient manner as in,its application to a weighing scale of the type, in which-an upwardpull is exerted upon a strap by the beam or steelyard for the purpose ofactuat ing the pendulum as described, for example, in Britishspecification No. 14495 of 1909, I employ a beam'preferably having awide base along the fulcrum knife edge line for a purpose which will behereinafter apparent, one convenient method of obtaining such wide basebeing to employ a bifurcated or forked beam, at, the two arms, b c, ofthe fork being supported upon the fulcrum knife edges d, e, fixed in anysuitable bracket,

f, or other part of the frame of the machine and in addition I mayemploy suitable end stops to prevent sliding movement of the beam uponthe knife edges. The-beam is preferably situated at a considerableheight above the point of suspension, 9 of the pendulum, h, in order tominimize any error Huronmsou,

which might "be causedin the readings due to any slight movement ofitheend of the steelya'rd to one side or the other causing alteratlon in theangular direction of the pull of the strap. 1

The pendulum h, which is similar to that described in the beforementioned specification, may have its body portion comparatively thin inthe axial direction and such pendulum may be formed from an integral thependulum oscillates in a direction atright angles to the beam orsteelyard so that any convenient fan or other suitably shaped dial 02,may. also be arranged at right angles to the steelyard instead of beingtandem thereto as i'susual, whereby considerable saving of spaceoccupied by the complete weighing scale is effected, and whereby thesalesman as he stands loading the goods on to the pan faces the dialsquarely thus avoiding the danger of antiparallax" readings. A scale panm maybe supported upon any suitable bracket .7: adapted to be controlledby a chain or rod y the pivot of which maybe conveniently protected bymeans of a cover 2 and as shown dotted in- Fig. 1.

It will be obvious that the broad base tends to prevent side-waymovement of the beam or steelyardwhile any error in the reading due'tosuch slight movement of the beam as may be possib e even with a broadbase is minimized by placing the beam at a considerable distance fromthe point of suspension of the pendulum.

In order to facilitate the reading upon the dial scale, which may beprovided with means for fore and aft adjustment'as forexample broadshelves or supports and suitable clamps, I refer to form the pointerarm, 0, with a b unt or'round-nosed pointer, 2, upon which is markedor'otherwise suitably impressed a fine line which itself acts as theusual pointer, the advantage of this arrangement being that the pointercarries as it were its -[own backgroundand facilitates the reading uponthe scale, and I may employ a suitable blackened ridge, g upon thedialto act as a background for the pointer arm.

The pendulum being of the type described in thebefore mentionedspecification, is balpredetermined point aforesaid eyelets, 7",

hooks or other equivalent devices or means to which threads, 8, or thelike may be attached. The pendulum may then be lifted by the threads andif its axis remains truly vertical, the balance is correct, but if itcants to one side or the other there is evidence that the balancerequires adjusting by adding or reducing metal on one side or the otherof the balancing line,

In order to render easy theadjustmentof the scale to compensatefor wearor for other reasons I may provide a screwed rod or spindle, 25adjustably mounted in or on the pendulum at right angles to thediametrical line above mentioned, the, screw being pref erably barredfrom view but accessible by means of a screw driver and provided at ornear its middle with a mark or line a initially in register with thebalancing line or mark, o, thereon, an inspection port, w, being left inthe pendulum so that the mark may be readily viewed when required. If atany time the screw is moved, this will at oncerbe evident to an expertwho may thus determine the amount of departure from the originalbalance. A similar arrangement may be provided along the balancing line.In these arrangements it is seen that the screw itself forms theadjustable poise.

It will be obvious that my invention is equally applicableto other typesof weighing scales such as that in which the pull upon the cam strap isin the downward direction or the type of Weighing scale in which thesteelyard pulls irom the same point in the pendulum throughout thedefiection of thelatter, and it will be readily understood that I mayvariously modify the details of construction and the arrangement of theseveral parts to suit the particular type of weighing scale to which myinvention is to'be applied.

Having now described my invention, What I claim as new and desire tosecure by, Letters Patent is I. A weighing scale comprising a beam, a

pendulum connected directly to and swinging about a center below saidbeam and at right angles thereto, and a pointer carried by said pendulumand adapted to swing in a plane at right angles to said beam.

2. A weighing scale comprising a beam, a pendulum connected directly toand swing ing about a center below said beam and at right anglesthereto, a pointer carried by said pendulum and adapted to swing in aplane at right angles to said beam, and a dial arranged in the Plane ofthe swing of the pendulum.

3. A weighing scale comprising a beam, a pendulum adapted to swing abouta center below said beam and at right angles thereto,

a cam on said pendulum, a flexible connection connecting said camdirectly to said beam, and a pointer carried by said pendulum-andadaptedto swing in a plane at right anglesto said beam.

4. A weighing scale comprising a beam, a pendulum adapted to swing abouta center below said beam and at right angles thereto,

a cam on said pendulum, a flexible connec-' tion connecting said camdirectly to said beam, a pointer carried by said pendulum and adapted toswing in a plane at right angles to said beam, and a dial arranged inthe plane of the swing of the pendulum.

5. A weighing scale comprising a forked beam having a wide base ofsupport, a pendulum connected. directly to and swinging about a centerbelow said beam and at right angles thereto, and a pointer-carried bysaid pendulum and adapted to swing in a plane at right angles to saidbeam.

6. A weighing scale comprising a beam, a pendulum connected directly toand swinging about a center below said beam and at right angles thereto,a pointer carried by said pendulum and adapted to swing in a plane atright angles to said beam, and a threaded spindle adjustably carried bythe pendulum at right angles to the normal balancing line.

7. A weighing scale comprising a beam, a pendulum vconnected directly toand arranged to swing in a plane at right angles to

